#include <iostream>
#include<stdio.h>
int chech() {
    union Un {
        char c;
        int i;
    }u;
    u.i=1;
    return u.c;
}

int main()
{
    int ret=chech();
    if(ret==1) {
        printf("小端\n");
    }else {
        printf("大端\n");
    }
    int i=20;

}
